Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc71a03deeeefc92…

MALICIOUS

PDF

34.8 KB Created: 2020-08-22 05:40:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0424751314dec04820c775e661aadadc SHA-1: 1e9c93bc4fbd70632494acb2e337c98cda6169b8 SHA-256: bc71a03deeeefc92434a2d50c2f0cf3d8161cfaeb0cf432c656f426c7df36ec6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a high number of embedded links, many of which point to a redirector URL. The document body, though heavily obfuscated, contains a reference to 'messenger lite apk new version free' and the malicious redirector URL. This suggests a social engineering lure to trick users into clicking the link, likely leading to malware download or a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=messenger+lite+apk+new+version+free In PDF document text
    • http://gesabota.vtfbla.org/uploads/1/3/1/3/131383363/cdd5950a7.pdfIn PDF document text
    • http://pibikuwi.trattoriatotarobyob.com/uploads/1/3/2/8/132814930/tefavaxumujexuko.pdfIn PDF document text
    • http://files.striveconference.com/uploads/1/3/0/7/130739937/6e47722451.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9473/7045/files/software_requirement_specification_for_railway_reservation_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7062/7735/files/cpm_ebooks_integrated_2_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0275/7021/files/36891602998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8049/8841/files/xitovomemikinakuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2518/4421/files/89383619599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4975/3493/files/petuperojukekemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/95449884015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0709/8529/files/33610855228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8181/7505/files/janome_sewing_machine_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/how_do_you_calculate_percentile.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A6A 5292 bytes
SHA-256: 6678adae751ab92a07083cff7d533eaeff2e0fedabc157e28bc99e30b3387ea3
font_01_sfnt_off00005c99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C99 9948 bytes
SHA-256: 3e0976c0a90bd564b552eb253884422a0cfda84cf8d1ce2c2d73b3f035554467

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